Live ball spin feedback

straightline said:
I should rephrase that. It should be possible to calculate which point on the cue ball will make contact with the object ball right?
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Not internally with an IMU. Acceleration magnitude is too great (5-10000 Gs) to measure and saturates the 16G sensor. Therefore directional information of impacts is very limited. Even so, The DigiBall has no idea where it is on the table, and no absolute directional reference. Running a magnetometer can give you some idea but it isn’t accurate enough indoors and consumes a lot of current.

You would need an external observer as part of the solution, like an outward-looking high speed camera. AUVs use video logs for dead reckoning and spacecraft use something similar to watch patterns of stars. Ground vehicles use GPS which is an external reference.
 
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nataddrho said:
Not internally with an IMU. Acceleration magnitude is too great (5-10000 Gs) to measure and saturates the 16G sensor. Therefore directional information of impacts is very limited. Even so, The DigiBall has no idea where it is on the table, and no absolute directional reference. Running a magnetometer can give you some idea but it isn’t accurate enough indoors and consumes a lot of current.

You would need an external observer as part of the solution, like an outward-looking high speed camera. AUVs use video logs for dead reckoning and spacecraft use something similar to watch patterns of stars. Ground vehicles use GPS which is an external reference.
Click to expand...
Got it thanks. What would a whole set of active balls cost anyway?
 
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